The visitors took the lead in the fifth minute as Leon Chambers-Parillon fired home a loose ball.

But Wealdstone levelled it up 19 minutes later as Dylan Kadji was brought down in the box, allowing Fejiri Okenabirhie to fire a penalty into the bottom right corner.

The Shrimpers regained their lead six minutes before the break as Chambers-Parillon finished cleverly with the outside of his boot for his second of the afternoon.

But the hosts levelled again after 63 minutes through a Luke Norris header before Olufela Olomola tapped home in the fourth minute of added time to secure a dramatic late win.